- Prior history of malignancies, unless the subject has been free of the disease for 5 years or more prior to the time of signature on the ICD. Exceptions to the 5 years or more time limit include history of basal cell carcinoma of the skin; squamous cell carcinoma of the skin; carcinoma in situ of the cervix; carcinoma in situ of the breast; carcinoma in situ of the bladder; incidental histologic finding of prostate cancer (Tumor/Nodes/Metastasis [TNM] stage of T1a or T1b).